Hertel 44838555 Roughing End Mill 0.5 in 4 Flute Cobalt

Product Description

The HERTEL 44838555 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel with a TiCN coating, it offers elevated heat resistance and wear life compared to standard HSS tooling. The cutter measures 0.5 inches in diameter with a 0.625-inch length of cut and a 2.625-inch overall length. Its fine-pitch, 4-flute geometry produces a coarse chip-breaking profile that reduces cutting forces and heat buildup during heavy roughing passes. This tool is installed by machinists and toolroom professionals on manual mills and CNC machining centers.

This roughing end mill is suited for ferrous and high-temperature alloy stock removal in job shop and production environments. The right-hand cut and right-hand flute configuration are standard for conventional vertical milling spindles. The 0.5-inch shank diameter fits directly into standard ER collets, end mill holders, and Weldon-style side-lock holders. The non-centercutting design means it is intended for peripheral and side milling cuts rather than plunge entry. It is a practical choice for roughing steel, stainless, and similar tough materials before a finishing pass.

Key Features

• M42 cobalt steel construction for improved hot hardness over standard M2 HSS
• TiCN coating increases surface hardness and reduces built-up edge on ferrous materials
• Fine-pitch 4-flute roughing profile reduces cutting forces and controls chip load
• 0.5-inch diameter with 0.625-inch length of cut and 2.625-inch overall length
• Right-hand cut, right-hand flute - compatible with standard milling spindle rotation
• Single-end configuration with non-centercutting tip geometry

Compatibility

Designed as an OEM-style roughing end mill for use in standard 0.5-inch end mill holders, ER collet chucks, and Weldon-style side-lock holders on manual and CNC vertical milling machines.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer torque and runout specifications for the holder type in use. Ensure the spindle is fully stopped and the machine is in a safe locked-out state before changing tooling. Verify holder bore cleanliness and shank seating depth before tightening. Non-centercutting geometry requires a pre-drilled or pre-slotted entry point - do not plunge directly into solid material.